DUAL-SIDED ENTRY: The symmetrical double-sided pedal self-locates just by stepping down into the cleat whether the pedal is right side up, upside down or anywhere else in its rotation.
双面锁：在对称的双面踏板上，刚刚踏进楔子踏板下，看看是否位于右侧，这时，倒置或任何其他的旋转。
This paper built a media firms competition model in the free entry media markets based on the two-sided markets theoretical frame.
在双边市场理论的框架下，建立了自由进入的电视媒介竞争模型。
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